update_json.py

#!/usr/bin/env python

# Author: Wilfried JEANNIARD 2022 https://github.com/willoucom
# This work is licensed under the Creative Commons Attribution 4.0 International License. 
# To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ 
# or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.

import os
import json 
import hashlib
import calendar;
import time;

# Json file to be parsed 
file_json = "games_menu.json"

# Get hash of the file
def hash_file(path):
    with open(path, "rb") as f:
        file_hash = hashlib.md5()
        chunk = f.read(8192)
        while chunk:
            file_hash.update(chunk)
            chunk = f.read(8192)
        return file_hash.hexdigest()


# open Json
with open(file_json, 'r') as f:
  data = json.load(f)

for file in data["files"]:
    # Find the file
    if os.path.exists(file):
        filename = file
    elif os.path.exists(os.path.basename(file)):
        filename = os.path.basename(file)

    # Update filesize
    size = os.path.getsize(filename)
    data["files"][file]['size'] = size
    # Update hash
    hash = hash_file(filename)
    data["files"][file]['hash'] = hash

# Update timestamp
data["timestamp"] = calendar.timegm(time.gmtime())

# Serializing json
json_object = json.dumps(data, indent=4)
 
# Writing Json
with open(file_json, "w") as outfile:
    outfile.write(json_object)